Torsion-balance for scales.



A. HITT. TORSION BALANGE FOR SCALES.

APPLIGATION FILED MAR. 1, 19077.

Patented Oct. 5,

W/NESSES m m. mm m Q ONA 6 3 A rromvs 1 tJNtTtZD ADRIAN HlITT, 0F JERS TORSION-BALAN 935,8 lti.

Specification of Application filed March 1,

To all whom it may concern:

Be-itknown that l, Annux Hire. a citizen of the United States, residing at Jersey @ity, in the county of lludson and State of New Jersey, have invented certain new and useful Improvements in lorsion-l3alanees 'tor Scales, of which the following is a specification, reference being had therein to the accompanying drawing.

My invention relates especially to the construction and arrangement oi the springs employed in torsion balances or scales. and has for its object the provision of means and mechanism tor easily and accurately regulating the tension of such springs in order.to obtain the requisite harmony required in scales of this eharacten To attain the desired end. myv invention consists essentially in the combination with a torsion scale truss, of a spring stretched around its periphery, and means for regulating the tension of said spring, all 0t which will be hereinafter first fully described, and then pointed out in the claims.

In the drawing, Figure 1 is a side elevation of a truss and spring embodying my invention. Fig. 2 is an enlarged View of the spring straining mechanism.

Like numerals of reference, wherever they occur, indicate corresponding parts in both figures.

l is a truss made of suitable material.

2 is a spring stretched around the periphery of the truss, the ends of the spring being held in a block 3 by means of pins el. The

.mssin through a ierforation 7 in the truss I": t l engaging the thread 0.

EY CITY, NEW JERSEY.

on FOR scams.

Letters Patent.

1907. Serial No. 359,930.

acquire the proper pitch or tone of the spring was obtained by expanding the truss by pressure applied to'. the center thereof. Before the scales were sentout from the factory the several springs used therein were tuned to harmonize. Such springs are liable to break, and when such a break 00- eurred. the entire scale had to be returned to the factory for the placing in position and tuning a new spring, entailing a loss of I time. and considerable expense. By use of l my invention, this loss of time and expense I is reduced to a. .iininnnn, as an unskilled person can easily apply a new spring and give. the same the proper teusimi.-

l have shown one method of applying strain to the spring, but it is obvious other means may be employed for tightening the spring without departing from the spirit of my invention.

Having now fully described my invention, what I claim as new therein, and desire to secure by Letters Patent, is:

1. The combination with a torsion scale truss, ot a divided spring stretched around the periphery of the truss, the ends of said spring connected to a straining block, a stra ining block, and means for regulating the tension of said spring by moving said block. I

2. The'combination with a torsion scale truss made of rigid material, of a divided spring stretched around its periphery, removable means lor clamping and holding each end of the divided spring, and means, carried by the truss, for straining the spring,

substantially as shown and described.

in testimony whereof ll hereto att'ix my signature in presence of two witnesses.

ADRIAN Hl'lT.

Witnesses:

Lotus F. Baum. Pinut'n.

Patented @ctz. 5., Jltitltl. 

